Sildenafil Citrate is the active ingredient used to treat erectile dysfunction (impotence) in men. It can help men who have erectile dysfunction get and sustain an erection when they are sexually excited.

Generic Viagra is manufactured in accordance with World Health Organization standards and guidelines (WHO-GMP).

Generic Viagra is made with thorough reverse engineering for the sildenafil citrate molecule - a totally different process of making sildenafil and its reaction. That is why it takes effect somewhat more quickly compared to other ED drugs which take 30-40 minutes to take effect.